Edge-trimming machine



" Jam. 16, 1923.

` F. H. PERRY.

EDGE TRIMMING MACHINE.

FILED MAY 3h 1919. 3SHEETS-SHEET l.` i

F. H. PERRY. EDGE TRINIMING MACHINE.

man MAY al. 1919. s smears-SHEET z.

Jan. 16, 1923.

1,442,175. F. H. PERRY EDGE TRIMMING MACHINE. FILED MAY 31. 1919.

3 SHEETS-SHEET 3- Patented dan. 16, 1923.

UNITED sTiiis inane FREDERICK E. PERRY, OF BEVERLY, MASSAGEU'SETTS,` ASSIGNOR TO UNITED SI-IOE :MACHINERY CORPORATION, OF PATERSON, NEIN JERSEY, A CORPORATION -OF NEW JERSEY.

application niet May 3i,

To all 'whom t may cof/wem.'

Be it known that I, Fnnnnincn li. PERRY, a citizen of the United States, residing at Beverly, in the county of Esseri and State of Massachusetts, have invented certain lm` provements in Edge-Trimming.'Machines, of which the following description, in con@ nection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures. f i

This' invention relates to' machines for operating on shoe soles, and is herein disclosed as embodied in a machine known in the shoemanufacturing art as ajointing machine.

As a step in shoemaking, it is customary, after the Wear sole and'uppei' have been permanently connected, to trim the edgeof the sole to thedesired contour, and for this purpose the sole is subjected lto Vsuccessive trimming instrumentalities each having an e'ective profile formed according to the particular portion of the sole upon which it is to operate.v For example, a trimming tool of one prole is used to trim the edge around the forepart where a square edge is desired, and a trimming -tcol of another profile is used to trim the inner edge along the shank portion where a curved or undercut edge is desired.l The shank-trimming operation alongthe inner edge should end at the breast of the heel, and, in order to avoid carrying it beyond such point, the

operation requires a form of trimming tool different from that used to ytrim other` portions of the sole. Furthermore, they trimming of the inner edge of the shank requires different manipulation of the shoe,l

due in .partto the concavity of that edge, and due in pai-t to the requirement that 'this part of the trimming should never progress beyond the breast of the heel. edge-trimmer isl ordinarily used to trim around the forepart, and -one vof ano-ther contour is used to tiiin the inner edge 'of the shank, buta rotary cutter'will not trim to vthe breast of the lheel without gougingv the heel. Consequently, in recent years, so-

called jointing machines' have been .used to a large extent to complete the trimming of the shank betweenv the farthest point reached by the rotary cutter and the breast A rotary y path.

nnen-'rniiviifiine MACHINE.

i919. y, seriaiivo. 300,804.

trim `the inner edge of a right shoe, and

ythe otherof'which is brought'intoA operation only when the machine is used Juitrini the inner edge of 'a left shoe. The supposed necessity fortwo chopping knives arose from the fact thatv the heel of the shoe adi i i vances from rightto left when operating upon the right side,A and advances from left to right-when operating uponthe kleft side.

In each case the function lof 'the chopping llniife is to sever theshaving at the'breast of the heel, and it is obviousjthat only one chopping knife is rnecessary at any onetime. The presence ofthe other chopping knife puts the user of the machine under the necessity of manipulating'tlieshoe,-in orderto avoid injuring it, :sof that the eXtra lchopping knifehmay not` touch the shoe. The diniculty ofavoidin'g contact with the entra knife' is relatively great when operating l upon an edge that has a pronounced incurve,

and also in the case of shoes thatl have ccmparatively short Shanks. In order to avoid interference when using the patented inachines itis necessaryA to tilt the shoe sofas.

to hold'the forward part thereof away from i the extrav chopping knife. 'This condition `net only divides,theattention of ,the user betweeny the operation` to be'l performed and' the mattei' of keeping the forward part 'ofl the 'shank clear of theeXtra' chopping knife, but it divertsthe trimming from the desired Unef object of lthe present 'invention is to overcome the, difiiculties `incident'alfto the in presence y. of two chopping knives, and this is accomplished, according to the rillustratedl embodiment of ,the invention,' by an organination comprising only onerchopping knife in combination with a lreciproratoryy shaving knife. In order, however, to utilize a single chopping knife on bot-h right and left edges the invention includes mechanism for shifting the chopping knife in opposite directions transversely of its lines of chopping movement so that it may operate in one path to sever the shaving from a right edge, and in another path to sever the shaving from a left edge.

Another object of the invention is to facilitate the transverse shifting ofthe chopping knife so as to relieve the user from special effort, mental or physical, incidentally to moving the' chopping knife to `the desired path of operation. ln the illustrated machine this is accomplished by shifting mechanism arranged to be actuated in consequence of moving the breast of the heel against one of two feelers arranged yto occupy positions where one of them will be displaced by a heel moving from right to left, and where the other will be rdisplaced by a heel moving from left to right. 'In any case', the chopping knife, rwhen fully shifted, will traverse a path of chopping movement coincident with the limit to which the then operating edge of the shaving knife is capable of moving, so that the shaving cut and the chopping cut will be coterminous.

Another object of the invention is to p ro- Avide means for preventing the chopping knife from operating in any lines other than those in which the chopping cut will be coterminous. with the shaving cut and coincidental with the breast of the heel. in the present embodiment shown for the purpose of illustration, this object is fulfilled by means arranged to lock the chopping mechanism against operating excepting .when it is in one of its two predetermined paths of operation, the locking means being controlled by the shifting mechanism so as to release the chopping mechanism when, and only when, the chopping knife has been fully shifted to one or the other of said paths.

The majority of heel-breasts if not all of them, are pitched, ythat is to say, inclined fromperpendicular relation to the tread surface. In order, therefore, to chop the shaving on an angle corresponding to the pitch of the breast an object of this invention is to alter the angle of the chopping knife whenever occasion requires, as when changing from the right side of a left shoe to the left side of a. right shoe. In the machine illustrated this alteration of angle is effected by mounting the chopping knife so that its lateral'movement fromv one path of operation to the other will include a component of angular movement* A further object of the invention is to return ythe chopping knife automatically after every chopping operation to an intermediate position between its two predeterf mined paths of operation, so that it will be normally inert and out of the field of observation of the shaving operation.

@ther objects and improvements in construction are shown by the drawings and are hereinafter described and claimed.

Referring to the accompanying drawings in which a preferred. embodiment of the ini vention for a specific kind of operation is.y

shown,-

Fig. l represents an elevation partly in section, of the right-hand side of the head.

of the machine designed for trimming the shanks of soles. According to this figure the frontvof the machine is at the left;

Fig. 2 represents a topplan view of the Y head, a portion of the, frame being brokenk away to disclose gearing contained therein. According to this figure the chopping knife occupies its median position where it is locked with respect to chopping movement;

Fig. 3 represents a perspective view including the chopping' knife, the laterally movable guide in which it is arranged to Y shaving knife and the chopping'knife, in-l cluding dotted lines indicating the path traversed by the shaving knife and dotted rlines indicating the predetermined paths of operating movement of the chopping knife. Referring first to F ig. l, the frame of the head is indicated at l0, and a continuously rotating shaft is indicated' at l2. The head pro-vides a bearing for the shaft, andthe lat-ter may be driven by any suitable means, not shown. The head is provided with a coupling flange Mby which it may' be fixed to a standard or other suitable support.

The shaving knife is indicated at 16, and it is provided with a shank by which it is affixed detachably to a holder i8. The holder, in turn, is affixed to an oscillatory carrier 20, a bo-lty 22servingl to clamp the holder against the forward end of the car-= rier .and dowels 24; serving to X the holder to the carrier with respect to turning' about the axis of the bolt. The carrier is mounted upon a spindle 26 relatively to which it is capable of oscilla-ting. The yrear end of` this spindle is Xed to the frame 10 ofthe head as sho-wn by dotted lines. A 4shoulder 27 formed on the carrier bears against afhardened steel block `29 and is thereby prevented from sliding endwise on the spindle. The

izo

l block 29 is fixed to the frame 10 by a clamping screw 3l. A. yoke 28 formed upon the carrier carries a bushing 30 that has sliding fit therein and a running fit on the raised pin 32 carried by the shaft l2. This mechanism serves to oscillate the shaving knife edgewise, the path traversed by the knife being substantially horizontal.

Referring to Fig. 5, the shaving knife is shown as having two cutting edges 34 and 36 at its ends respectively, and the limits to which the knife moves are indicated by dotted lines. As shown by Fig. l, the shaving knife is curved in cross section so that it will form a convex edge on 'the work. A guide for guiding the work relatively to the knife is indicated at 38 in Fig. 1, the lower end of said guide being arranged to occupy the groove or crease between the upper and the extension of the sole.

The chopping knife is indicated at 40 and it is detachably secured to the lower end of a holder 42, the latter being split at its lower end to provide relatively movable clamping portions, and being provided with a clamping bolt 44 arranged to tightenv said clamping portions against the knife to hold the latter rigidly. The holder 42 is arranged to slide vertically in a guide or carrier 46, the upper end of the holder extending above the guide to provide connection with the actuators that impart chopping movement to the knife. The holder 42 is angular in cross section, as shown by Figs. 2 and 3, to prevent it from turning about its axis relatively to the guide. The guide is provided with an arm 48 that extends horizontally toward the rear of the head. A pivot stud 50 extends through the arm 48 and is fixed thereto in any suitable manner, as, for example, by being pressed into a hole formed in the arm to provide what is sometimes termed a drive fit. The stud 50 is arranged to turn in a suitable bearing in the frame 10 to enable the chopping knife to lmove from side to side, as hereinafter explained. The chopping knife is normally maintained in `a median position, as shown by Fig. 2, and for this purpose. the hub 52 of the arm 4S is provided with gear teeth 54 that mesh with corresponding teeth 56 Fig. 2) formed upon a rack member 58. This rack member is affixed by screws 60 to a laterally movable carriage comprising two members 62,

the connection between said members being and connected by a rod 64, the latter being arranged to slide endwise in bearings 66 provided by the frame 10. The rear ends of the members 62 are arranged between the frame l0 by screws 70. The stress of the right-hand spring 68 is applied to move. the carriage to the left, and that of the lefthand spring is applied to move the carriage v to the right. Vhen the carriage occupies its median position, as shown by Fig. 2, the springs are seated on abutments 72 formed on the head, although their tips remain in contact with opposite faces of the carriage to maintain the latter in its median position.

In order to utilize the heel of the shoe to shift the chopping knife laterally from its median position to the desired path of chopping movement, the laterally movable carriage comprising the members 62 isprovided with two feelers or work-engaging lingers 74. The lower ends of these fingers are arranged to be engaged andv displaced by the breast of the heel, although only one of them acts at any one time. The lingers 74are arranged at opposite sides of the vertical median plane of the head, as indicated by dotted lines in Fig. 2. The right-hand finger, therefore, stands in the path of a heel `approaching from the right, and the left-hand finger stands in the path of a heelapproaching from the left. The upper ends of the fingers 74 are mounted to turn,A for the purpose of adjustment, in bearings formed in the members 62. Split collars 76 are clamped to the fingers and are .connected by the springs 7 8 and arranged to draw the lower ends of the fingers toward each other. Set screws 8O carried by the collars 76 are arranged to bear against portions of the members 62 to adjust t'he lower endsof the fingers by turningk the fingers in their bear ings. The split collars 76 are tightened by screws to clamp the fingers 74, but the latter may be adjusted up and down when the screws are loose. The tips of the fingers 74 may be adjusted toward the front or rear when screws 60 are loose, the members 62 having slots 63 to enable them to turn about the axis of rod 64.

JVhen, in the course of trimming the shank of the sole, the breast of the heel displaces one of the fingers 74, the yfinger so displaced remains, to all intents and purposes, rigid relatively to the laterally movable carriage that supports it, and the lateral motion isl transmitted to the carriage through the set'screws 80. The carriage is thus shifted inthe direction followed by the heel, the racky member 58 being thereby` caused to swing the chopping knife guide 46 in the opposite direction to shift the chopping knife toward the Vapproaching heel. The lateral shifting of the chopping knife is limited by stop-screws 81. The set screws 8() are intended to beadjusted to such` positions that the maximum lateral movement of the chopping knife will carry the latter to a path coincident with the limit to which the active edge of the shaving knife may cut. This shifting of the carriage iiexes one of the leaf springs G8 from its abutment '72, and when the heel is removed 'to release. the finger 74, the leaf spring' reacts to return the chopping knife to its normal or median position.

The chopping knife remains motionless in its upper position whenever its carrier stands in the median position, and it does not begin to execute its chopping motion until it has reached one of its two limits of lateral movement. There are two actuators or hammers for imparting chopping movement to the knife, one of which operates only when the knife is moved to the right and the other of which operates only when the knife is moved to the left. These two actuators, according to the forni shown, are levers 82 and 84. They are arranged to extend nearly horizont-ally, their rear ends being mounted on a fulcrum pin 8G supported by a portion of the frame 10. The forward ends of the actuators are in the form of segmental heads indicated at 88 and 90 respectively. These heads are arranged to lie side by side in contiguous relation as sho'wn by Figs. 2 and 4, and they are curved to be concentric relatively to the axis of the stud 50 about which the choppingl knife swings. A gro-ove 92 is formed in the upper end of the chopping knife holder 42, and both heads 88 and r90 occupy this groove when the chopping knife is in its median position. The actuators are thus locked relatively to each other. When, however, the chopping knife is moved laterally to one of its prescribed paths of chopping movement the holder 42 moves entirely away from one of the actuators but remains in co-operative relation to the other. Guiding fixtures 94 and 96 mounted on the frame 10 are arranged to engage the outer face of the actuators to sustain the latter against lateral stresses, the front faces of the heads 88 and 90 co-operating in this respect to sustain the actuators against stresses tending to move them toward each other. Springs 98 are connected to the actuators respectively, to exert downward stress on them, said springs constituting' means fo-r imparting the chopping` movement. Each actuator is thus arranged to operate independently of the other. YThe actuators are moved upwardlv by cams 100 respectivelv, said cams being' `afiixed to a shaft 102 extending through a suitable bearing in the frame 10 transversely of the shaft 12. A worm 104 formed on the latter shaft engages and drives a worm gear 106 fixed to the cam-shaft. In the present instance the cam-shaft is driven to rotate in a clockwise direction when viewed according to Fig'. 1. The cams 100 are similar, in form, to ratchet wheels, each havmg a plurality of high points to lift the actuator a corresponding number of times in each revolution of the cam shaft. Motion is transmitted upwardly from each cam to the corresponding` actuator' by a thrust rod 108, the lower end of which is arranged to bear on the working surface of the cam, and the upper end of which is in the form of a yoke and straddles a resilient connecting member 110. A pin 112 is arranged to connect the two branches of the yoke, and over-lies the member 110 to maintain operative connection between the latter and the rod 108. That portion of the resilient member 110 that occupies the yoke is suitably curved to compensate for angular movement of the resilient member. The member 110 is .fixed t-o the actuator 84 by screws 114, and may be flexed by a set screw 116 to adjust the actuator 84 relatively to the rod 108.

The lower end of the rod 108 has access to its cam through an opening' formed in an adjustable housing 118. This housing is clamped to the frame 10 by a Screw 120, the lat-ter extending through a segment-al slot 122 in an ear formed on the housing'. This form of connection between the housing and the frame enables the housing to be adjusted rotatively about the axis of the cam, and its purpose is to advance or retract the lower end of the rod 108 relatively to the cam to obtain the desired timing of the cam action. lnasmuch as the friction produced by the cam tends to swing the rod toward the rear the rod requires a bearing to keep it in oooperative relation to the cam, and for this purpose the housing` is provided with a hardened steel member 124 arranged to en'- gage the rear face of the rod. A spring 126 is connected to the rod and is anchored t-o the frame 10 in position to hold the rod seated against the bearing member 124. This form of bearing permits all necessary angular movement of the rod and permits the latter to be immediately withdrawn from evo-operative relation to the cam as occasion may require. Although the actuators 84 are constantly under downward stress due to springs 98. the invention includes detente arranged to lock them in their upper positions so long as the choppingl knife is between its two prescribed paths ofl operative movement. These detente, however, are arranged to move laterally with the chopping knife to release whichever actuator is required to operate the chopping knife. In the present instance the det-ents for this purpose are carried by the arm 48 of the chopping knife guide. As shown best by Fig. 3, the detents.

which are indicated remoectively at 130 and 182, are mounted one upon another` and each embraces the upper end of' stud 50 so that they may be adjusted toward and from each other about the axis of the stud. The detents are clamped to arm 48 by` clamping screws 134, and they are provided with segmental slots, one of which is indicated at 136, of sufficient length to permit the necessary range of adjustment. The actuators 84 are provided with bosses 138 (see Figs. 1 and 4) which bosses are arranged to bear re-l spectively o-n the detents 130, 132. In practice the detents will be adjusted to provide a space between them of sufficient width to receive one boss 138 or kthe other, as thecase may be, such space enabling the actuator with which it may be in registration to respond to the downward pull of the actuating spring 98.

Whenever the chopping knife is shifted to its right-hand position, for example, to sever a shaving, detent 132 releases the right-hand actuator, but detent 130 continues to underlie and support actuator 82. The latter, therefore, remains inactive in its raised position while actuator 84 responds to the action of spring 98 and that of the corresponding cam alternately. As soon, however, as the breast of the heel releases the right-hand linger 74, the left-hand leaf spring 68 reacts to return the chopping knife to itsmedian position. In the event.-

of releasing the linger 74 while the actuator 84 is in any position other than its highest position, the return of the chopping knife to its medianposition will be postponed by interference between detent 132 and the boss 138 -of the actuator then in use. course, however, the actuator will be raised by its cam, and when it has risen far enough to release detent 132, the latter, together with all the other elements that are connected to move inunison incidentally to the lateral shifting of the chopping knife, will respond tothe stress of the left-hand leaf-spring 68, and the detent 132will, therefore, move under the boss 138 of the actuator 84 and thereby lock the actuator in its upper position where it will necessarily be in horizontal registration with the other actuator. This horizontal registration insures freedom of the chopping knife holder 42 to ing the chopping knife to the right or left.,

Fig. 5, in addition to showing, by dotted lines, the range of movement of the shaving knifel 16, includes full lines representmg the chopping knife in-its median position, and dotted lines representing the chopping knife in each of its two prescribed paths of operat-ing movement.. Itis to be observed that,

whether the chopping knife be shifted to the right or to the left, its path of choppingv In due v movement is coincidental with the lcorresponding limit of movementfof the shaving knife. It follows, therefore,thatboth the shaving knife and the chopping knife will cut to a common point coincident with the breast line of the heel, provided the workengaging members 74 are adjusted correctly for that purpose.

The stationary inseam guide 38 is shown as being mounted so that it may be moved away fromoperative position. It is desirable sometimes to retract the guide from the vicinity of the knives, as for example, to afford easy laccess to the knives, for adjustment or for detaching them from or attaching them to their respective holders. this reasonl the guide 38 is mounted trunnions 140 by which itv is connected to portions of the frame 10. The trunnions 140 are shown in the form `of screwsand they have threaded connection with the frame'. This construction enables the screws to be set up `tightly to clamp the guide 38- in operative position,the guide being, never-|` For Having thus described my invention, what I claimas new and desire to secure by Letters Patent ofthe United States is:

comprising a knifel for chopping the sole, means operable by a projection on thesole to shift the knife transversely of its lines of choppingmovement so that it may operate in different paths, and means controlled by said shifting means to impart chopping movement to the knife.

95 1. A machine for operating on shoe-soles,-

2.'A machine for operating on shoe-soles,

comprising a chopping knife guide, a chopping knife arranged to slide in said guide,

means arranged to impart chopping motion 'i to the knife,and means operable by a proj ection on the sole'to move the guide laterally so as to shi-ft the knife to a .predetermined path of chopping movement.

3. A machine Yfor operating on shoe-soles, comprising" chopping means including a chopping knife and mechanism arranged to operate the latter, means arranged to guide the knife to the sole,and means operable by the work to move said guiding means so as to shift the knife transversely of the lines of chopping movements.

4. A machine for operating on shoe-soles, comprising a knife arranged to be shiftable transversely of its lines of cutting movement,stops arranged to limit the Atransverse shifting of said knife so as to determine certain operating positions ofthe knife, and

mechanism controlled by said shifting to op- 5. In a machine of the character described, a chopping knife. arranged tor be movable transversely of its lines of chopping movement, controllable mechanism arranged to operate the knife, and means operable by a projection on the Work to shift the knife transversely and to control said operating mechanism.

6. In a machine of the character described, means arranged to shave an edge of the sole of a shoe, a chopping knife arranged to be shifted laterally of' its lines of chopping movement to and from a predetermined path of operation, and means arranged normally to displace the knife laterally from said path.

7. In a machine of the character described, means arranged to shave an edge of the sole of a shoe, a chopping knife arranged to be shifted laterallv of its lines of chopping movement to tivo predetermined paths of 0peration, 'and means arranged normally to shift said knife laterally from either one of said paths to an intermediate position.

8. In a machine of the character described, means arranged to shave an edge of the sole of a shoe, a chopping knife arranged to be shifted laterally of its lines of chopping movement to and from a predetermined path of operation, means arranged normally to shift the knife laterally from said path, and

meanscontroll'ed'vby said shifting means to impart operative movement to the knife only When the latter occupies said path;

9. In a machine of the character described, means arranged to shave anedge of the sole of a shoe, a chopping knife arranged to be shifted laterally of its lines of chopping` movement to two predetermined paths of operation, means arranged normally to shift the knife laterally from either one of said paths to an intermediate position, and means controlled by said shifting means to impart operative movement to the knife only When the latter occupies one of said paths.

l0. In a machine of the character described, chopping means including a chopping knife and mechanism arranged to operate the latter, a Work-engaging member arranged to be moved by the breast of a heel attached to the work, and means arranged to shift the knife laterally in consequence of movement imparted to said member by the heel.

ll. In a machine of the character described, chopping means including a chopping knife and mechanism arranged to op erate the latter, a Work-engaging member arranged to be moved by the breast of a heel attached to the Work, and means arranged to transmit such movement of said member tol shift the knife transversely of its path of chopping movement.

l2. In a machine of the character described, a double-edged shaving knife and mechanism arranged to reciprocate the san/1e edgeivise, a chopping knife arranged to'chop the shaving formed by said shaving knife, and means arranged to shift said chopping knife laterally to paths `of chopping movement coincident With the limits respectively of the path traversed by the shaving knife.

13. In a machine of the character described, a double-edged shaving knife and mechanism arranged to reciprocate the same edgeWise, a chopping knife arranged to chop the shaving formed by said shaving knife, a pair of Work-engaging members one of which is arranged to be displaced by the breast of the heel as the latter approaches the shaving knife from one side and the other of which is arranged to be displaced by the breast as the heel approaches the shaving knife from the opposite side, means operable by either of said Work-engaging members to shift the chopping knife in a direction opposed to that of the approaching heel, and means arranged to operate the chopping knife.

14. Ina machine of the character' described, a chopping knife, a plurality of operating members relatively to which the chopping knife is movable transversely of its lines of chopping motion, means arranged tov shift the knife transversely from co-operative relation with one of said operating meme bers to co-operative relation with another, and means arranged to control said operating members so as to prevent operation of said knife While the latter is being shifted transversely.

l5. In a. machine of the'character described, a chopping knife, a plurality of operating members relatively to which' said knife is movable transversely of its lines of chopping motion, said knife and 'operating members having co-operative tongue-andgroove connecting portions by which the motion of the operating members, individually, is transmitted to the knife`l and means ,ar-

ranged to shift the knife from co-operative 1(3.In a machine of the character de-L scribed, a chopping knife, independently movablehammers for operating said knife, hairimer-operating mechanism, and mecha-y nism arranged to shift the knife from one of the hammers to another' and to prevent operating movement of the hammers excepting the one relatively to which the knife is ternporarily in operative position.

17. In a machine of the character describednv a chopping knife, hammers movable independently of each other to operate said knife, the latter being movable from one of the hammers to another, controllable mechanism arranged to operate the hammers one at a time, and means arranged vto shift the knife to one of said hammers and io render the hammer-operating mechanism operative as to the hammer to Which the knife is shifted.

- I8. In a machine of the character described, a chopping knife, hammers vmovablev in dependently of each other to operate said knife, hammerfoperating mechanism including yielding elements to'permit the hammers to remain non-operative, controllingmeans arranged torestrain the vhammers from operating, and means arranged to shift the knife to 'one hammer or another and to move said controlling means t0y release y the hammer relatively to which theknifeis'temporarily in operative position. f

19. In a machine having means for shave ing an edge of the shank of the sole of a shoe, means for chopping the shaving at the breast of the heel, said chopping means comprising a reciprocatory knife movable about an axis substantially parallel to its lines of chopping movement, and means arranged yto shift the chopping knife about said axis to different paths for operating on right and left edges. v

20. In a machine for operat-ing upon shoes, a tool arranged to be shifted to various predetermined positions to' operate on the Work, a Work-engaging member and a support therefor arranged to be moved by the Work, means arranged to transmit motion 'from said support to shift said tool to one or another of said positions, and means arranged to operate the tool.

2l. In a machine for operating upon shoes, a tool arranged to be shifted to various predetermined positions to operate on the Work, means arranged to vbe moved by the Work to shift the tool to one or another of saidy positions, and controllablemeans, including a continuously driven element, arranged to be controlled by said tool-shifting means to initiate operation of the tool When the latter has been shifted to anyone of said predetermined positions.

22. In a machine for operating upon shoes, a tool arranged to be shifted to various predetermined positions to operate on the Work, means arranged to be moved by the Work to shift the tool to one or another of said positions, and means arranged to operate the tool, said tool-shifting means comprising a Work-engaging member adjustable about axes extending transversely to each other.

23. In a machine for operating upon shoes, a tool movable to different positions for ope erating on right and left shoes, mechanism arranged to operate the tool in various positions, and means for controlling said operating mechanism, said tool being shiftable to different operating positions by said controlling means and the latter being movable by the Work.

24. In a machine having means for shaving an edge of the shank portion of the sole i ofv a shoe, means including a knife for chopping the shaving at the breast-line of-the heel, and means for shifting-the chopping knife to' different positions for operating on right and left edges.

' 25. In a machine having means for shaving an edge of the shank portion of the sole position of the chopping knife for operating t on right and 'left edges.

- 26. In a machine having means for shaving an edge of the shankv-port'ionof the sole Vof a shoe, means including a knife for chopping the shaving at the breast-line of the heel, and means for shifting the `chopping knife bodily and for altering itsangle according to the pitch of the heelbreast` vto operate on right and left edges.

27. In a machine having means for shaving an edge of the shank of the sole of a shoe, means for chopping the shaving at'the breast of the heel, said chopping means comprising y a reciprocatory knife movable bodily in lines transverse to its lines of chopping movement to operate in different paths for right and left edges, and means operable by the breast of the heel fo-r shifting the chopping knife to the path corresponding to the side of the shoe presented for operation. f

.28. In a machine of the character ldei scribed,I a tool movable to one v predetermined path for operating nponv a right shoe and to another predetermined path for operating upon a left shoe, means arranged normally to move said tool to an intermediate position between said two paths, mechanism constructed and arranged.

movable angularly to pitch the chopping cut v according to the pitch of the vheel-breast.

30. A machine `for operating on shoes,

comprising arvvork-engaging tool arranged initially outside .the field of the Work but movable to different localities for operating on the Work, mechanism arranged to operate said tool in each of its operating localities, and means controlled by the Work so as to de termlne the locality at Which said tool may operate and to initiate operation of the tool in that locality. l

In a machine of the character described, a chopping knife arranged to be shifted transversely to various operating positions7 normally inoperative means 'for 0perating said'knii'e, and means operable by or through the agency of the Work for shifting said knife transversely and 'for rendering; said operating means operative. l

A machine for operating on shoes, comprising a. Working tool arranged to be shifted to a plurality of predetermined Werl@ ing localities and to execute working movementk in each of said localities, means arranged to shift said lrniiel to one or another of said localities, and tool-ioperatingmeans arranged to impart Working movement to said tool whenl the latter is in one of said predetermined localities, said shifting means being arranged to prevent operation of said tool when the latter is in any other locality than one of said predetermined localities,v

33. A machine for operating` on shoes, comprising a Working tool arranged to be shifted to a predetermined working locality and to a non-Working locality7 mechanism arranged to operate said tool in said Working locality, and means controlled by Shifting said tool to prevent said mechanism from operating the tool in any intermediate position between the two aforesaid positions.A

In testimony whereof I have signed my name to this specification.

FREDERICK H. PERRY. 

